fix(files_sharing): use webroot for public links

Regression of https://github.com/nextcloud/server/pull/55750

Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>

apps/files_sharing/src/utils/generateUrl.spec.ts

@@ -3,13 +3,27 @@
  * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 
-import { describe, expect, it, vi } from 'vitest'
+import { beforeEach, describe, expect, it, vi } from 'vitest'
 import { generateFileUrl } from './generateUrl.ts'
 
 const getCapabilities = vi.hoisted(() => vi.fn())
 vi.mock('@nextcloud/capabilities', () => ({ getCapabilities }))
 
 describe('generateFileUrl', () => {
+	beforeEach(() => {
+		window._oc_webroot = ''
+	})
+
+	/**
+	 * Regression test of https://github.com/nextcloud/server/issues/56374
+	 */
+	it('should work without globalscale and webroot', () => {
+		window._oc_webroot = '/nextcloud'
+		getCapabilities.mockReturnValue({ globalscale: null })
+		const url = generateFileUrl(12345)
+		expect(url).toBe('http://nextcloud.local/nextcloud/index.php/f/12345')
+	})
+
 	it('should work without globalscale', () => {
 		getCapabilities.mockReturnValue({ globalscale: null })
 		const url = generateFileUrl(12345)

apps/files_sharing/src/utils/generateUrl.ts

@@ -4,7 +4,7 @@
  */
 
 import { getCapabilities } from '@nextcloud/capabilities'
-import { generateUrl } from '@nextcloud/router'
+import { generateUrl, getBaseUrl } from '@nextcloud/router'
 
 interface IGlobalScaleCapabilities {
 	token?: string
@@ -14,7 +14,7 @@ interface IGlobalScaleCapabilities {
  * @param fileid - The file ID to generate the direct file link for
  */
 export function generateFileUrl(fileid: number): string {
-	const baseURL = window.location.protocol + '//' + window.location.host
+	const baseURL = getBaseUrl()
 
 	const { globalscale } = getCapabilities() as { globalscale?: IGlobalScaleCapabilities }
 	if (globalscale?.token) {